General

  • Target

    308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230

  • Size

    120KB

  • Sample

    220621-dw63xscdg8

  • MD5

    b84615094beeac27936f9d8838bba53c

  • SHA1

    03c41583b675686e05c855c2e891387c88df1933

  • SHA256

    308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230

  • SHA512

    06e49d5b95e5c601b8813fe21ae3bb0563e5231171b6655eb34a97403fb51d9e0e171d66907958c112cd6b43a61f57e101b6c3a691e8b843a1566c6fd61a621e

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230

    • Size

      120KB

    • MD5

      b84615094beeac27936f9d8838bba53c

    • SHA1

      03c41583b675686e05c855c2e891387c88df1933

    • SHA256

      308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230

    • SHA512

      06e49d5b95e5c601b8813fe21ae3bb0563e5231171b6655eb34a97403fb51d9e0e171d66907958c112cd6b43a61f57e101b6c3a691e8b843a1566c6fd61a621e

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    • Windows security bypass

    • Creates new service(s)

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Deletes itself

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

New Service

1
T1050

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

New Service

1
T1050

Defense Evasion

Disabling Security Tools

1
T1089

Modify Registry

2
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Tasks